I wonder what possessed them to think they were remains that would belong to the Caddos or Wichitas? They tended to range further south and west, even 1000 years ago. This is forested area and they were open plains Indians, even into Kansas, to the north, but in the western part. The tools sound like Plains tools, too.

Eastern Oklahoma and western Arkansas had been Cherokee for maybe 300 years. Maybe it was some Caddoan (not necessarily the Caddos or Wichitas themselves) or a Delaware-Lenape tribal family that came from the east.

I suppose if they dig more and find some mounds, that might answer the question - or they already know there are some. Hunh - interesting, anyway.

I caught my very first fish as a tiny kiddo at Spavinaw! Then promptly fell down *splat* in the watercress at the shoreline, just me and my little perch and short-stuff rod/reel.